SocketChannel Asynchronous

import java.net.InetSocketAddress;
import java.nio.channels.SocketChannel;
/*from jav a  2 s .  co m*/

public class MainClass {
  public static void main(String[] argv) throws Exception {
    String host = "localhost";
    int port = 80;

    InetSocketAddress addr = new InetSocketAddress(host, port);
    SocketChannel sc = SocketChannel.open();

    sc.configureBlocking(false);

    System.out.println("initiating connection");

    sc.connect(addr);

    while (!sc.finishConnect()) {
      System.out.println("doing something useless");
    }

    System.out.println("connection established");

    sc.close();
  }

}